Effects of Pouring Temperature on the Solidification Directional Microstructure of Superalloy CMSX-6 Blades

Abstract:

Superalloy CMSX-6 have a high concentration of high-melting point additions, which causes an increase of the turbine blades' working temperature. It has potential application particularly in turbine blades of aircraft jet engines. The superalloy CMSX-6 Blades casting were obtained after pouring the shell mould in the work, and effects of pouring temperature on the solidification directional microstructure of casting were investigated using scanning electron microscopy (SEM) techniques. The results showed that with the increase of pouring temperature, the primary dendrite arm spacing of CMSX-6 superalloy blades decreased, the size of γ phase in the dendrite trunk and in the inter-dendrite decreased slightly, and the size of the γ-γ eutectic did not change largely, the volume fraction of γ-γ eutectic increased slightly, the main defects such as pores and shrinkage cavity decreased, its size became smaller.

• Periodical: Applied Mechanics and Materials (Volumes 488-489)
• Pages: 57-60
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.488-489.57
• Online since: January 2014
• Authors: An Dong Wang*, Zhen Li Zuo, Xiang Feng Liang, Yu Tao Zhao, Zhi Hong Jia
• Keywords: CMSX-6 Superalloy Blades, Directional Solidification Origination, Pouring Temperature

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